I thought the same thing about expense of a 20" wheel set but then ran across the new Michellin Alpine winter tires at Tirerack. They have 275/40/20 coming in october for $208/tire. So I ordered a set of 214 reps from ebay vendor all four in the 10" front diameter and will run the 275/40/20's all the way around for the winter as staggered tires are not recommend for snows (don't know if true or not but have heard the same thing from multiple sources). In summary, I maintain the rolling diameter of the oems, the look of the 214's (which I happen to like better than any of the other oem styles), close to the same width as the standard 315's, and all at a price similar to a set of 19". I obviously haven't mounted them yet, but they should have an outside width difference of less than an inch compared to the 315's on the oem 11''. If I end up not liking the look I can always add spacers to the rear set to make up the difference.